Question: Five AC adaptors that are used to charge batteries of a cellular phone are taken from the production line each 15 min and tested for

Five AC adaptors that are used to charge batteries of a cellular phone are taken from the production line each 15 min and tested for their direct-current output voltage. The output voltages for 24 sample subgroups are as follows:

Subgroup 1 2 3 4 5 6 7 8 9 10 11

Plot the R chart.

Subgroup 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Output Voltages of Five Adaptors 9.03 9.08 8.85 8.92 8.90 9.05 8.98 9.20 9.04 9.12 8.93 8.96 9.14 9.06 9.00 9.16 9.08 9.04 9.07 8.97 9.03 9.08 8.93 8.88 8.95 8.92 9.07 8.86 8.96 9.04 9.00 9.05 8.90 8.94 8.93 8.99 8.96 9.02 9.03 8.92 9.05 9.10 8.93 9.00 9.09 8.96 8.98 8.97 8.92 8.98 9.03 9.06 8.94 8.93 8.92 8.94 8.99 8.93 9.05 9.10 9.07 9.01 9.05 8.96 9.01 8.82 8.95 8.99 8.93 8.91 9.04 9.05 8.90 9.08 9.03 8.91 8.92 8.96 8.94 8.90 9.05 8.93 9.01 8.88 8.82 8.89 8.94 8.88 9.04 9.00 8.98 8.93 9.05 9.00 9.03 8.94 8.92 9.05 8.95 8.95 8.91 8.90 9.03 9.12 9.04 9.01 8.94 9.02 8.94 8.99 8.93 9.05 9.07 8.87 8.89 9.01 8.90 9.04 9.02 9.04

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To plot the R chart we first need to calculate the range of each subgroup Range of subgroup 1 023 Ra... View full answer

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